No interactions present.
Mud mining I reckon
To be honest, not quite sure! It, and quite a few others, were flying down into the holes and never seemed to reemerge quickly. This was the only one that stayed on the surface for any length of time to take a photo.
O. bicornis (=O. rufa) never nests in the ground
Lat/Lng: 51.6, -1.3
OS grid ref: SU4999